Using data (all values are in kilocalorie per mole at `25^(@)C`) given below, calculate the bond energy of `C-C` and `C-H` bonds.
`DeltaH^(Theta)` combustion of ethane `=- 372.0`
`DeltaH^(Theta)` combustion of propane `=- 530.0`
`DeltaH^(Theta)` for `C`( garphite) `rarr C(g) =+ 172.0`
Bond enegry of `H-H` bond `=+ 104.0`
`Delta_(f)H^(Theta) of H_(2)O(l) =- 68.0`
`Delta_(f)H^(Theta) of CO_(2)(g) =- 94.0`

Explanation

To calculate the bond energy of C-C and C-H bonds using the provided data, we will follow these steps:

### Step 1: Write the combustion reactions for ethane and propane.

1. **Combustion of Ethane (C₂H₆)**:
\[ C_2H_6 + \frac{7}{2} O_2 \rightarrow 2 CO_2 + 3 H_2O \]
...